/****************************************************************************
 Copyright (c) 2010 Максим Аксенов
 Copyright (c) 2010 cocos2d-x.org
 Copyright (c) 2013 Martell Malone
 Copyright (c) 2013-2016 Chukong Technologies Inc.
 Copyright (c) 2017-2022 Xiamen Yaji Software Co., Ltd.

 http://www.cocos.com

 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated engine source code (the "Software"), a limited,
 worldwide, royalty-free, non-assignable, revocable and non-exclusive license
 to use Cocos Creator solely to develop games on your target platforms. You shall
 not use Cocos Creator software for developing other software or tools that's
 used for developing games. You are not granted to publish, distribute,
 sublicense, and/or sell copies of Cocos Creator.

 The software or tools in this License Agreement are licensed, not sold.
 Xiamen Yaji Software Co., Ltd. reserves all rights not expressly granted to you.

 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 THE SOFTWARE.
****************************************************************************/

#include "platform/SAXParser.h"
#include "platform/FileUtils.h"
#include "tinyxml2/tinyxml2.h"

namespace cc {

class XmlSaxHander : public tinyxml2::XMLVisitor {
public:
    XmlSaxHander() : _ccsaxParserImp(0){};

    virtual bool VisitEnter(const tinyxml2::XMLElement &element, const tinyxml2::XMLAttribute *firstAttribute);
    virtual bool VisitExit(const tinyxml2::XMLElement &element);
    virtual bool Visit(const tinyxml2::XMLText &text);
    virtual bool Visit(const tinyxml2::XMLUnknown &) { return true; }

    void setSAXParserImp(SAXParser *parser) {
        _ccsaxParserImp = parser;
    }

private:
    SAXParser *_ccsaxParserImp;
};

bool XmlSaxHander::VisitEnter(const tinyxml2::XMLElement &element, const tinyxml2::XMLAttribute *firstAttribute) {
    //log(" VisitEnter %s",element.Value());

    ccstd::vector<const char *> attsVector;
    for (const tinyxml2::XMLAttribute *attrib = firstAttribute; attrib; attrib = attrib->Next()) {
        //log("%s", attrib->Name());
        attsVector.push_back(attrib->Name());
        //log("%s",attrib->Value());
        attsVector.push_back(attrib->Value());
    }

    // nullptr is used in c++11
    //attsVector.push_back(nullptr);
    attsVector.push_back(nullptr);

    SAXParser::startElement(_ccsaxParserImp, (const CC_XML_CHAR *)element.Value(), (const CC_XML_CHAR **)(&attsVector[0]));
    return true;
}
bool XmlSaxHander::VisitExit(const tinyxml2::XMLElement &element) {
    //log("VisitExit %s",element.Value());

    SAXParser::endElement(_ccsaxParserImp, (const CC_XML_CHAR *)element.Value());
    return true;
}

bool XmlSaxHander::Visit(const tinyxml2::XMLText &text) {
    //log("Visit %s",text.Value());
    SAXParser::textHandler(_ccsaxParserImp, (const CC_XML_CHAR *)text.Value(), static_cast<int>(strlen(text.Value())));
    return true;
}

SAXParser::SAXParser() {
    _delegator = nullptr;
}

SAXParser::~SAXParser(void) {
}

bool SAXParser::init(const char *encoding) {
    CC_UNUSED_PARAM(encoding);
    // nothing to do
    return true;
}

bool SAXParser::parse(const char *xmlData, size_t dataLength) {
    tinyxml2::XMLDocument tinyDoc;
    tinyDoc.Parse(xmlData, dataLength);
    XmlSaxHander printer;
    printer.setSAXParserImp(this);

    return tinyDoc.Accept(&printer);
}

bool SAXParser::parse(const ccstd::string &filename) {
    bool ret  = false;
    Data data = FileUtils::getInstance()->getDataFromFile(filename);
    if (!data.isNull()) {
        ret = parse((const char *)data.getBytes(), data.getSize());
    }

    return ret;
}

void SAXParser::startElement(void *ctx, const CC_XML_CHAR *name, const CC_XML_CHAR **atts) {
    ((SAXParser *)(ctx))->_delegator->startElement(ctx, (char *)name, (const char **)atts);
}

void SAXParser::endElement(void *ctx, const CC_XML_CHAR *name) {
    ((SAXParser *)(ctx))->_delegator->endElement(ctx, (char *)name);
}
void SAXParser::textHandler(void *ctx, const CC_XML_CHAR *name, int len) {
    ((SAXParser *)(ctx))->_delegator->textHandler(ctx, (char *)name, len);
}
void SAXParser::setDelegator(SAXDelegator *delegator) {
    _delegator = delegator;
}

} // namespace cc
